/*
  Copyright (C) 2001-2002 Laurent Martelli <laurent@aopsys.com>
  
  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2 of the
  License, or (at your option) any later version.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this program; if not, write to the Free Software
  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  USA */

package org.objectweb.jac.aspects.gui;

import org.objectweb.jac.core.rtti.FieldItem;

/**
 * This interface defines a callback method used to notify that a
 * field was updated.
 */
public interface FieldUpdate {
   /**
    * Upcalled when a field was modified.
    *
    * @param substance the object of which a field was updated
    * @param field the updated field
    * @param value new value of the vield
    * @param param extra infos (unused)
    *
    * @see ViewControlWrapper#registerField(Wrappee,FieldItem,FieldUpdate,Object)
    */
   void fieldUpdated(Object substance, FieldItem field, 
                     Object value, Object param);
}
